The latest search for MH370 — the Malaysia Airlines plane that disappeared four years ago en route from Kuala Lumpur to Beijing with 239 people onboard — has ended in failure, the company behind the search said on Tuesday.

The company, Ocean Infinity of Houston, which scoured the seabed for any sign of wreckage with support from the Malaysian government, announced that the search was winding down with no evidence of the plane’s whereabouts.

“Part of our motivation for renewing the search was to try to provide some answers to those affected,” Oliver Plunkett, Ocean Infinity’s chief executive, said in a statement. “It is therefore with a heavy heart that we end our current search without having achieved that aim.”

He did not rule out a future resumed hunt.

The plane, a Boeing 777 operated by Malaysia Airlines, deviated from its planned route north on March 8, 2014, for reasons that are still unknown. After traveling south over the Indian Ocean, the plane is believed to have flown for about five hours before probably running out of fuel and disappearing.

The governments of Australia, Malaysia and China suspended the official search after scrutinizing about 46,000 square miles of the Indian Ocean floor at a cost of more than $150 million. Officials then concluded that the probable crash site was farther north.

The Malaysian government began the latest search in partnership with Ocean Infinity after pressure from families of the missing.

Ocean Infinity agreed to participate as part of what the Malaysian government called a “no cure, no fee” agreement, under which the company could have received up to $70 million if it found the wreckage or data recorders, and nothing if it did not. The Seabed Constructor, a ship operated by the company, set out in January to being searching.

In a little over three months of searching, the investigation covered almost the same-sized area as the previous search had completed in two and a half years, Ocean Infinity said in its statement.

But the investigators came no closer to finding the plane.

Mr. Plunkett thanked Seabed Constructor crew members “who have worked tirelessly,” and called the Australian Transport Safety Bureau’s dedication to find the plane “unwavering.”

“We sincerely hope that we will be able to again offer our services in the search for MH370 in future,” he said.

A version of this article appears in print on , on Page A5 of the New York edition with the headline: Latest Search for Malaysian Airliner Fails. Order Reprints | Today’s Paper | Subscribe